The Arizona Cardinals' biggest key to success for the next three seasons can be summed up in one word: offense.

How the Cardinals can adapt and adjust on the offensive side of the ball will determine whether they continue to build on the foundation that coach Bruce Arians laid in 2013 or whether they regress back to the state of mediocrity.

The first step to being successful over the next three seasons is finding a long-term solution at quarterback. Current starter Carson Palmer is entering the final year of his contract because his third season voids if he remains on the roster five days after the Super Bowl. A young, steady, productive quarterback is needed to take over this team, and the question then becomes is Logan Thomas that guy? The Cardinals also need to solidify the right side of the offensive line, like they did the left side by signing tackle Jared Veldheer and drafting guard Jonathan Cooper.

Stability up front can make the offense run despite rough conditions behind it. In three years, the likes of Larry Fitzgerald and Michael Floyd might not be wearing Cardinal red anymore. Fitzgerald is coming up on the end of his career in the next few years, and Floyd might be a free agent in the next two. The Cardinals will need to make Floyd their next No. 1 receiver and build around him to remain successful.

Running back and tight end are the two positions that are young and feature players poised to be around for the next few seasons, but, in order for the Cards to be successful through 2016, the rest of the offense needs to be stabilized and shored up.